The Clayville plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.
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75° on Nov. 15, 1993, the hottest reading for this week of the year since 1974. Next is 70° in 2020.
Clayville’s center stands about 470 ft above sea level. Within three miles the land runs from 280 ft to 700 ft, a difference of 420 ft: hilly country. The highest named summit within 15 miles is Jerimoth Hill, about 860 ft, 7 miles northwest.
Under the town center the state geologic map shows Scituate Igneous Suite - granite, from the Late Devonian, 366 to 380 million years old.
The section below crosses 13 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 26×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Granite. Age: Late Devonian, 366 to 380 million years old. About 4 mi of the line.
Gneiss, amphibolite. Age: Neoproterozoic, 542 to 1,000 million years old. About 4 mi of the line.
Alkali-feldspar-granite. Age: Late Devonian, 366 to 380 million years old. About 4 mi of the line.
Age: Carboniferous, 299 to 324 million years old. About 2 mi of the line.
Quartzite. Age: Neoproterozoic, 542 to 1,000 million years old. About 2 mi of the line.
Gneiss. Age: Neoproterozoic, 542 to 1,000 million years old. About 2 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 7 smaller units along the line are not listed.
Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.
A raindrop that lands in Clayville reaches Narragansett Bay and the Atlantic Ocean by way of Westconnaug Brook, the Pawtuxet and the Providence: about 30 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Clayville; river miles along the main stem, rounded.
Clayville has a warm-summer humid continental climate. Summer afternoons average 80° in July; winter nights fall to about 19° in January. A normal year brings about 62 inches of snow; with the rain, that comes to about 54 inches of water.
On November 14 Clayville normally reaches 50° and falls to 33°. The record high is 72°, in 1993; the record low 11°, in 1986. The most rain on this date, 2.03 in, fell in 2009.
Normals 1991–2020 and records since 1974 at North Foster 1 E, 6 miles north-northwest, 160 ft higher. NOAA, through RCC-ACIS.
